patches/glibc/2.5.1/160-use_short_for_fnstsw.patch
author Cody Schafer <dev@codyps.com>
Fri May 09 19:10:08 2014 -0700 (2014-05-09)
changeset 3310 6fb47591d19d
parent 607 aaf7ae5cb11a
permissions -rw-r--r--
arch: add option to let gccdecide what floating point to use

Add an ARCH_FLOAT_AUTO option to avoid passing float options
to gcc and allow it to choose

Signed-off-by: Cody P Schafer <dev@codyps.com>
[yann.morin.1998@free.fr: slightly reword the commit log]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <088489641f4790262685.1399687813@localhost>
Patchwork-Id: 347584
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Original patch from H.J. Lu, as reported there:
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http://www.nabble.com/PATCH:-Use-short-for-fnstsw-td14775171.html
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fnstsw stores 16bit into %ax. The upper 16bit of %eax is unchanged.
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The new assembler (binutils-2.18.50.0.4 and up) will disallow "fnstsw %eax".
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diff -dur glibc-2.6.1.orig/sysdeps/i386/fpu/ftestexcept.c glibc-2.6.1/sysdeps/i386/fpu/ftestexcept.c
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--- glibc-2.6.1.orig/sysdeps/i386/fpu/ftestexcept.c	2004-03-05 11:14:48.000000000 +0100
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+++ glibc-2.6.1/sysdeps/i386/fpu/ftestexcept.c	2008-06-24 10:56:14.000000000 +0200
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@@ -26,7 +26,7 @@
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 int
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 fetestexcept (int excepts)
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 {
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-  int temp;
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+  short temp;
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   int xtemp = 0;
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   /* Get current exceptions.  */